As fans of Coronation Street will know, the roof of the Underworld factory is going to collapse in upcoming scenes when Carla Connor can't afford to have it done properly - leading to the death of a Weatherfield resident. Despite the fact that it appears to be an accident at first, fingers get pointed as it's revealed that it was done deliberately. But who could be behind such a heinous act?

Of course, there are literally hundreds of residents in the fictitious town of Weatherfield, but show bosses at Corrie have thankfully narrowed the number of suspects down to just six people to choose from - and given us their potential reasoning.

Coronation Street: Who causes the factory roof collapse?

Carla Connor

'In the eyes of the residents, Carla is public enemy number one. With her plans to outsource the factory exposed, there are those who believe she deliberately wanted to force the premises to be shutdown. Others are left wondering if her desire to chase profits led her to ignore the warning signs of a damaged roof, putting off repairs and placing her staff at risk.

'Viewers know she asked Gary to ignore the need for a full repair and patch up the roof as cheaply as possible. Does this make Carla the prime suspect? As she starts to unravel, her guilt lying heavy, she's certainly a key suspect in the eyes of the law as she's quickly brought in for questioning. Will Carla lie to the police about what she knew about the state of the roof or will she crumble under the pressure and confess all?'

Nick Tilsley

'Having discovered Carla's plans to outsource production at Underworld and cut him out of the business, Nick was fuming. Nick's had his eye off the ball while focussing on the barbers, but as he desperately tries to keep the fact he embezzled the funds from Audrey a secret, it looks like his deception could be coming home to roost.

'Accomplice Natalie's causing trouble and David's getting edgy. Needing more money to keep a blackmailing Natalie off his back, Nick tells David he'd be better off if the business went up in smoke. Expecting the factory to have been empty on the day of the collapse, could an ever-darker Nick have attempted an insurance job to free up his cash? He stole from his own gran, after all – what is Nick really capable of?'

Peter Barlow

'Peter and Carla cause fireworks, can't live with each other but can't live without each other. Both know this but, try as they might to move on, the chemistry between them keeps drawing them back together. Peter had a blossoming relationship with Abi and a new adventure planned setting sail on his boat, but as his departure date arrives, a vulnerable Carla realises she can't let go.

'Peter was humiliated when she publicly shunned him at the factory, leaving in a cloud of resentment, angry at being blamed for saddling Carla with Nick as a partner. Blighted by the rejection of the woman he was prepared to give it all up for, did Peter lash out before Carla came after him? Angrily damaging her beloved factory to hurt Carla the way she hurt him?'

Robert Preston

'Robert finally thought he had it all; a successful business, the woman of his dreams and a baby on the way. But when Michelle ended their relationship over her realisation that she doesn't want another baby, Robert blamed Carla for her interference. As far as Robert's concerned, it was Carla that planted the seed of doubt in Michelle's mind about their future then helped it to grow.

'After barging into Carla on the street and telling her to watch out, Robert has made no attempt to hide the fact that he's out to get Carla for meddling in his relationship. When viewers see a brick go through Carla's car window and Robert lurking nearby, they'll start to wonder if Robert's thirst for revenge led him to tamper with the factory roof?'

Gary Windass

'With a struggling business and a family to support, Gary was pleased when Carla offered him the job repairing the factory roof - but he may look back on it at as a poisoned chalice. Having checked over the property following the boat fire and a subsequent leak, Gary advised Carla to replace the whole structure. But Gary found himself in a difficult position when Carla insisted he fix it as cheaply as possible.

'Desperate not to lose the work, and with Seb needling him at every opportunity, Gary cut corners in order to get the job done. Could Gary's patch-up job be to blame for the accident that cost someone their life?'

Seb Franklin

'Seb's feud with Gary shows no signs of letting up after Seb's clumsy pass at Gary's girlfriend Sarah, and their subsequent fallout saw Seb lose his job. With his life in tatters after the loss of his brother and sister, the breakdown of his relationship with mum Abi and now a bust-up with girlfriend Faye, Seb is on a path to self-destruct, firmly laying the blame at Gary's door.

'On the outside, it looks to Seb like Gary's got it all and while he flashes the cash with Sarah in the Rovers, gloating about the work he's got coming his way, a brooding Seb vows to teach Gary a lesson. Could a vengeful Seb have tampered with Gary's roof repairs at the factory in a bid to ruin Gary like he feels he ruined him?'

We still don't know which unfortunate resident will lose their life in the roof collapse, either - but Corrie bosses have revealed that it could be Sally Metcalfe or her sister Gina Seddon, one of the factory staff or even someone who comes to help free the people trapped inside as the roof falls.

Sisters Sally and Gina apparently climb onto the scaffolding to hang banners in protest of Carla's new plans, and they get into an almighty row. Not the best timing! As the roof gives way, they falls to the ground... Could Sally or Gina be the unlucky one?

Although the factory should have been empty, the workers decided to barricade themselves inside also in protest, but will they get out alive when the roof falls on top of them? There's also Tim Metcalfe, Abi Franklin and Tyrone Dobbs to consider, as they rush to help them escape.